Someone who, after passing their test, relishes in driving round, often making ridiculously short trips and irritating all those who are stuck on public transport.
Common among the student population, particularly sixth form.
Opposite of a bus wanker.

#1 "Where's Bob?"
#2 "Aw, he's driving over. Car wanker."

Car Wanker: "Awww you still get the bus? I drove over." *flashes keys in none-subtle way*